> My point is that maybe what they lack is not the raw intelligence to envision the use of tools, but the dexterity to apply that intelligence to the task of co

> My point is that maybe what they lack is not the raw intelligence to envision the use of tools, but the dexterity to apply that intelligence to the task of complex tool making. Sounds plausible to me. The more difficult question is how does one ever prove that it's true? I agree that it could be, just overcoming the difficulty in testing with species we barely understand/communicate with hasn't caught up yet to our curiosity.